<!DOCTYPE html>
<html lang="en" >
<head>
    <meta charset="UTF-8">
    <title>用户登录</title>
</head>
<body>
    <form action="/login" method="post">
        用户名：<input name="username" type="text">
        密码： <input name="password" type="text">
        <input type="submit" value="提交">
    </form>

</body>
</html>